basics c++, void function, mindset of compiler

 #include<iostream>

using namespace std;
// or use "std::" before cout
/*this
is
a
multiline
comment*/
/*comment is not red by the compiler.
number of spaced lines does not matter in c++*/
int a=9;
void krishna(){
    int a=8;
    cout<<a;
}

int main(){
    int a=5;
    a=7;
    int b=8;
    krishna();
    cout<<a;
    char coding='d';
    cout<<coding;
    double pi=3.14159;
    cout<<pi;
    bool kssk=false;
    cout<<kssk;
    // long int k = 1234567890123456789;
    // int s = 7;
    // int ks = 5;
    // float a = 1.22;
    // // cout<<"the value of k is "<<k<<". the value of s is "<<s<<". the value of ks is "<<ks;
    // cout<<"the value
    // f k is "<< k<<".the value of s is "<<s<<".the value of ks is "<<ks;
    // // cout<<" the value of a is "<<a;
    return 5;
}

Comments

Post a Comment

Popular posts from this blog

Function Overloading in C++

  #include <iostream> using namespace std ; int sum ( int a , int b ){     cout << "by function1 is " ;     return a + b; } int sum ( int a , int b , int c ){     cout << "by function2 is " ;     return a + b + c; } int volume ( int a ){     return a * a * a; } int volume ( int r , int h ){     return 3.14 * r * r * h; } int volume ( int l , int b , int h ){     return l * b * h; } int main (){     cout << "the sum of 5 and 7 " << sum ( 5 , 7 ) << endl;     cout << "the sum of 5, 7 and 57 " << sum ( 5 , 7 , 57 ) << endl;     cout << "the volume of cube of side length 5 is " << volume ( 5 ) << endl;     cout << "the volume of cylinder of radius 5 and height 7 is " << volume ( 5 , 7 ) << endl;     cout << "the volume of cuboid of length 5, bredth 7...
Read more

oops recall, basic operations and nesting of member functions

  /*OOPS---> Classes and Objects C++--> initially called as C with classes by stroustroup Class--> extension of structures in C Structures had limitations     - members are public     - a function cannot be created inside structure     - no methods Classes --> Structures + more Classes --> can have methods and properties Classes --> can make few members as private and few as public Structues in c++ are typedef (mtlb typedef na lgakr bi structures ke varibales define kre to vo hojaenge) you can declare objects along with class declaration like this:     class Employee {           class definition           } krishna, shalini; harry.salary = 9 makes no sense if salary is private */ /************NESTING OF MEMBER FUNCTIONS******** */ #include <iostream> using namespace std ; // int main(){     //     binary b; //     b.read(); //   ...
Read more

OBJECT ORIENTED PROGRAMMING, classes public and private access modifiers (syntax)

/**************OBJECT ORIENTED PROGRAMMING (oops)************ */ /*why oops??? #c++ language was designed with the main intention of adding object oriented features to C language #as the size of program increases readability, maintaibility and bug free nature of the program decreases. #this was tha main problem with langage C #as a result the possiblity of not addressing the problem in an effective way increases #also, as data was almost neglected, data security was easily compromised #using classes solves this problem by modelling program as a real world scenario PROCEDURE ORIENTED PROGRAMMING (POP) (jo abi tak kr rahe the) #consists of writing a sequence of instructions for the computer to follow #main focus is one functions and not on the flow of data #functions can either use local or global data #data moves openly from function to function OBJECT ORIENTED PROGRAMMING #Works on the basis of CLASSES and OBJECTS #A class is a template to create objects #treats data as a critical elem...
Read more